基于双模谐振器的低剖面双频滤波偶极子天线  

Low Profile Dual-frequency Filtered Dipole Antenna based on Dual-mode Resonator

作　　者：林娴静 郑尧燊 王善进[1] 严安 Lin Xianjing;Zheng Yaoshen;Wang Shanjin;Yan An(Dongguan University of Technology,Songshan Lake District,Dongguan City,Guangdong Province,523808)

机构地区：[1]东莞理工学院,广东东莞523808

出　　处：《测控与通信》2023年第3期14-16,50,共4页

摘　　要：本文提出了1种基于双频谐振器的低剖面双频滤波偶极子天线。提出的天线设计在单层介质板上包括1对工作在不同频率的偶极子辐射单元以及由双模谐振器构成的馈电网络。通过调整双模谐振器的尺寸,使其2个工作频率与偶极子辐射单元的2个谐振频率对应相同,之后再调节两者间的耦合,可获得在通带内具有2个反射零点的双通带带通滤波响应。仿真结果表明,该双频滤波偶极子天线的阻抗带宽分别为5.9%(2.62~2.78GHz)和1.5%(3.98~4.04GHz),低频段增益保持在0.5dB,高频段增益为4.2dB,带外增益迅速下降,具有良好的带通滤波响应。A low profile dual-frequency filtering dipole antenna based on a dual-mode resonator is proposed in this paper.The proposed antenna consists of a pair of dipole radiation units working at different frequencies and a feeding network composed of a dual-mode resonator on a single dielectric substrate.By adjusting the size of the dual-mode resonator so that its two operating frequencies correspond to the ones of the dipole radiation units,and then adjusting the coupling between them,the dual-passband band-pass filtering response with two reflection zeros in the passband can be obtained.The simulation results show that the impedance bandwidths of the dual-frequency filtered dipole antenna are 5.9%(2.62~2.78GHz)and 1.5%(3.98~4.04GHz),respectively.The low band gain is maintained at 0.5 dB,the high band gain is 4.2 dB,and the out-of-band gain decreases rapidly,showing good band-pass filtering response.

关 键 词：双频滤波 双模谐振器 偶极子天线 

分 类 号：TN8[电子电信—信息与通信工程]